A lot of data is used in the internal structure of the PLC and in the user's use program. These data have the following forms in terms of structure or number system.
(1) Decimal number
Decimal numbers are also known as word data in PLC. It is primarily present at the set value K of timers and counters; Auxiliary relays, timers, counters, status relays, etc.; timer and counter time value, etc.
(2) Binary numbers
Decimal numbers, octal numbers, hexadecimal numbers, and BCD codes all exist in the form of binary numbers in the PLC. However, when the system operation monitoring is displayed using peripheral devices, it will be restored to the original number system. A binary number is also known as digit data in a PLC. It is mainly found in the contacts and coils of various relays, timers, and counters.
(3) Octal numbers
The address numbers of the input relays and output relays of the FX series PLC are octal.
(4) Hexadecimal numbers
Hexadecimal numbers are used to use operands or actions in instructions.
(5) BCD code
The BCD code is a four-digit binary number that represents its one-digit decimal number. The decimal number in the PLC is often presented in the form of BCD code, and it is also often used in the digital switch in the form of BCD output or the display control of the seven-segment code.
(6) Constants K, H
Constants are an integral part of PLC's internal timers, counters, and usage instructions. The constant K is used to indicate the decimal number, the scale of the 16-bit constant is -32768-+32767, and the scale of the 32-bit constant is -2147483648-+2147483647.
The constant H is used to indicate the hexadecimal number, which includes 16 digits 0-9 and A-F, with the scale of the 16-bit constant being 0-FFFF and the scale of the 32-bit constant being 0-FFFFFFFF.
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Mitsubishi Electric begins research and development of a Mars satellite probe probe
TOKYO, February 21, 2020 – Mitsubishi Electric Corporation (TOKYO:6503) announced today that it has been appointed by the Japan Aeronautics and Astronautics Agency (JAXA) as the contractor for the Mars Lunar Probe (MMX) space probe. Mitsubishi Electric has launched development activities for the project that will utilize MMX's system ...
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Mitsubishi PLC selection 5 elements
Mitsubishi PLC selection - element 1: IO points
The number of ZUI IOs that can be accessed by the Mitsubishi PLC control system.
Mitsubishi PLC FX series now commonly used basic unit host is: FX1SFX1N, FX1NC, FX2N, FX2NC, FX3U. FX3UCFX3G, FX5U, 9 series.
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Mitsubishi PLC control inverter method
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First, the control accuracy is different
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Mitsubishi inverter parameter setting operation
Mitsubishi inverter has many setting parameters, each parameter has a certain selection range, and the use of individual parameters is often improper, resulting in the inverter can not operate normally. Let's take a look at the Mitsubishi inverter parameter setting operation.
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Mitsubishi PLC has a built-in time adjustment step
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The work of the directive ...
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Mitsubishi touch screen GT10 series models and their features
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Mitsubishi Electric instruction format
(1) Arbitrary axis AC command (G140)
G140 Instruction Address = Axis Address Instruction Address = Axis Address ... ;
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Three common communication methods of PLC - Mitsubishi
A PLC network consists of multiple subnets. The communication process of each subnet is determined by the communication protocol. The communication method is the core content of the communication protocol. The means of communication include visit control and data transmission. What are the three common communication methods of PLC?
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Mitsubishi PLC keeps the circuit written
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Mitsubishi FX5U series PLC advantages
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Mitsubishi Electric expands 6th generation 1200V large-scale DIPIPM
Power semiconductor module for 40kW class commercial air conditioner
Expansion of the "6th Generation 1200V Large DIPIPM" product lineup
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How to configure the mechanical torque period of the inverter - Mitsubishi inverter
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Mitsubishi PLC commonly used model features
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